[clang] [llvm] [WebAssembly] Implement an alternative translation for -wasm-enable-sjlj (PR #84137)

[Heejin Ahn via cfe-commits]

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@@ -1291,19 +1327,29 @@ bool WebAssemblyLowerEmscriptenEHSjLj::runSjLjOnFunction(Function &F) {
   Type *IntPtrTy = getAddrIntType(&M);
   Constant *size = ConstantInt::get(IntPtrTy, 40);
   IRB.SetInsertPoint(SetjmpTableSize);
-  auto *SetjmpTable = IRB.CreateMalloc(IntPtrTy, IRB.getInt32Ty(), size,
-                                       nullptr, nullptr, "setjmpTable");
-  SetjmpTable->setDebugLoc(FirstDL);
-  // CallInst::CreateMalloc may return a bitcast instruction if the result types
-  // mismatch. We need to set the debug loc for the original call too.
-  auto *MallocCall = SetjmpTable->stripPointerCasts();
-  if (auto *MallocCallI = dyn_cast<Instruction>(MallocCall)) {
-    MallocCallI->setDebugLoc(FirstDL);
+  Instruction *SetjmpTable;
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aheejin wrote:

Now we don't need to support the old and new options simultaneously we don't need to share this. Also Emscripten SjLj can use your functions too, so it doesn't need it either.

https://github.com/llvm/llvm-project/pull/84137